MRS. CARYN M. MASTERSON MS, OTR/L
NPI 1336398759
Occupational Therapist in Hammond, IN

Active since September 10, 2008
7443 INDIANAPOLIS BLVD, HAMMOND, IN 46324(219) 844-8100(219) 844-7460 Get Directions Write a Review

NPPES record last updated: May 20, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Caryn M. Masterson Ms, Otr/l NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. CARYN M. MASTERSON MS, OTR/L (NPI 1336398759) is an individual occupational therapist in Hammond, Indiana and active in the NPI registry since September 2008. She maintains a secondary practice location in Midlothian.

NPPES Registry Identity

NPI1336398759
Entity TypeIndividualFemale
Primary Taxonomy225X00000X
Provider Legal NameMRS. CARYN M. MASTERSONCredential: MS, OTR/L
Location Address7443 INDIANAPOLIS BLVDHammond, IN 46324-2909
Mailing Address2001 Butterfield Rd Ste 1600Downers Grove, IL 60515-1211
Fax(219) 844-7460
Sole ProprietorNo
Enumeration DateSeptember 10, 2008
Last NPPES UpdateMay 20, 2025
NPPES CertifiedMay 20, 2025
✔ NPI 1336398759 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOccupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225X00000X
Definition
An occupational therapist is a person who has graduated from an entry-level occupational therapy program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, or approved by the World Federation of Occupational Therapists (WFOT), or an equivalent international occupational therapy education program; has successfully completed a period of supervised fieldwork experience required by the occupational therapy program; has passed a nationally recognized entry-level examination for occupational therapists, and fulfills state requirements for licensure, certification, or registration. An occupational therapist provides interventions based on evaluation and which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapists address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life.
Also ListedSpecialistTaxonomy 174400000X · License 056002589 (IL)
7443 INDIANAPOLIS BLVD, Hammond, IN 46324

Secondary Practice Location 1

Location 15105 Margaret Curtis LnMidlothian, IL 60445-1586 · Phone (708) 385-0425

Other Identifiers 1

Other056002589IL · Department Of Professional Regulation Registered Occupational Therapist

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Caryn M. Masterson Ms, Otr/l is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Caryn Masterson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Orthopaedic Surgery
9001 BROADWAY
Merrillville, IN 46410
  • Reassigned Medicare billing, Indiana enrollment
  • Medicare enrollment name: Bone & Joint Specialists, P.C.
  • 23 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physical Therapist (Pediatrics)
7443 INDIANAPOLIS BLVD
HAMMOND, IN 46324
Physical Therapist
7443 INDIANAPOLIS BLVD
HAMMOND, IN 46324
Physical Therapist
7443 INDIANAPOLIS BLVD
HAMMOND, IN 46324
Physical Therapist
7443 INDIANAPOLIS BLVD
HAMMOND, IN 46324
Physical Therapist
7443 INDIANAPOLIS BLVD
HAMMOND, IN 46324
Physical Therapist
7443 INDIANAPOLIS BLVD
HAMMOND, IN 46324

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Caryn Masterson's NPI number?

The NPI number for Caryn Masterson is 1336398759. It was assigned to this individual provider in the NPPES registry on September 10, 2008.

Where is Caryn Masterson located?

Caryn Masterson practices at 7443 Indianapolis Blvd, Hammond, IN 46324. The listed phone number is (219) 844-8100.

What is Caryn Masterson's specialty?

The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.

Is Caryn Masterson enrolled in Medicare?

Yes. Caryn Masterson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Caryn Masterson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Caryn Masterson reassigns Medicare benefits to Bone & Joint Specialists, PC (Merrillville, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Caryn Masterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Caryn Masterson was last updated on May 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.